Cable bearing for walking beams



March 24, 1925. 1,530,890

1 R. G. HAMAKER CABLE BEARING FOR WALKING BEAMS Filed June 27, 1924 Patented Mar. 24, 1925.

UNITED STATES PATENT OFFICE.

REX G. HAMAKER, O'F HOUSTON, TEXAS.

CABLE BEARING FOR WALKING BEAMS.

Application filed June 27, 1924. Serial No. 722,863.

To all whom it may concern:

Be it known that I, Rnx G. HAMAKER, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain .new and useful Imgrovements in a Cable Bearing for Walkin cams, of which the; following is a speci cation.

This invention relates to new and useful improvements in a cable bearingfor walking) beams.

ne object of the invention is to provide an attachment of the character described.

specially designed to be attached to the walking beam, and forming a bearing in which the pump operating cable works.

The 1 walking beam commonly used 1n pumping wells is pivoted on a standard and connected at one end to the power through which it is reciprocated. At its other end the walkingbeam is connected to the polish rod of-the ump by means of a rod clamp secured to t e rod, and a cable which is attached to the rod, and works in a cable hearing on the last named end of'the walkmg beam. An object of this invent on is to provide an improved type of. bearing designed to be attached to said beam, and in which the cable may work without substantial injury to the cable.

Another object of the invention is to pro vide an attachment of the character described which may be readily fitted to the walkin beam without cutting or shaping the en of'the walking beam to receive the same.

A further feature of the mventlon resides in the-provision of an attachment of the character described so formed that inoperation a direct u ward ull will be exerted through the ca Is on t e pump polish. b

rod, so that said rod will not become bentor worn in an uneven manner, as it is operated.

'A still further feature of the invention resides in the provision of a cablebearing of the character described which is pivotally connected to the walking beam so that the bearing may be swung out of the way when it is desired to pull the pump rods, so as not to interfere with said work, and

which includes also means forholding said bearing ina fixed position, relative to the walking beam during the operation, of the With the above and other ob'ects in view, the invention has particular re ation to cer' with the work of pulling the pump rods.

Figure 3 shows a fragmentary plan view thereof.

Figure 4. shows an end view;'and,

Figure 5 shows a side elevation of a walking beam mountedon its standard.

Referring now more particularly to the drawings, wherein like numbers of reference desi ate similar parts in each of the figures, t e numeral 1'- designates an upright standard onwhich the walking beam 2 is pivoted. The numeral 3 designates the y I pump tubing with the usual stufling .box 4 at its upper end through which the pump polish rod 5 'works in pumping a well. The numeral 6 designates a polish rod clamp of conventional constructlon, which is clamped on the polish rod.

One end of the walking beam is connected to the power through which said beam is oscillated. This connection has not been shown as it is in common use. Pivoted to opposit sides of the other end of the walking beam are the arcuate cable guides 7, 7. These guides are fastened to the walking beam, preferably by' means of a suitable olt as 8 which passes through them and through the walking beam. However, other means of pivoting the guides to the walking beam may be employed. At their upper ends these guides are widened inwardly forming lugs or seats as 9, 9, which rest against the upper side of the beam during the operation of the pump. These guides are provided with grooves as 10, 10. There is a looped cable 11 whose ends are attached to the clamp 6 on opposite sides, the arms of the cable workin in .the respective grooves 10,10, and the ooped portion thereof working in grooves as 12 formed in the liiiigs 9, 9, said grooves 10'and 12 forming in ect a substantially U-shaped bearing in which the looped cable 11 works. The cable bearings 7 are substantially arcuate as stated and form arcs of circles having their centers in the center of the pivotal mounting of the walking beam. The polish rod is thus substantially tangential to these cable bearin s at all times of the operation of the walking beam, and as a consequence a direct upward pull is exerted on said rod, thus preventing the bending or uneven wearing of the same.

These ides also converge downwardly, to coincide with the downwardly converging ends of the cable 11. ,While the pump is being operated, it is necessary that the cable guides or bearings be held in a fixed position with reference to the walking beam, and for that purpose there is a jointed brace 13 for each guide. Each brace is formed of two sections 14 and 15, which are pivoted together at one end, and whose other-ends are pivoted to the walking beam, and the respec tive guides 7. These sections are preferably formed of angle iron, and when in substantially aligned position they hold the ides 7 in fixed or workin position, the section 14 having an extende overlapping flange 16 which en ages against the corresponding flange of 51c section 15 so as to form a one way joint. When it is desired to disconnect the pump rod from the walkin beam for the pu 'ose of pulling said r0 s, the toggle joint etween the sections 15 and 14.- will ermit the swinging of the guides 7 inwar ly toward the walking beam as indicated in Figure 2, so as to be out of the way and not to interfere with the work of pulling said rod.

What I claim is 1. An attachment for walkin beams including a pair of guides adapte to be pivotally connected to opposite sides of the beam and forming a bearing, for a flexible connecting member.

2. An attachment for walking beams including a cable bearing adapted to be pivotally connected to said beam, and means -for preventing the movement of said bearing relative to said beam.

3. An attachment for walking beams including a pair of guides ivotally connected to opposite sides of the cam and forming a cab e bearing, and means connected to the beam and to the respective guides and adapted to hold the guides in fixed relation to said beam.

4. An attachment for a walking beam formed with a transverse cable bearing, and depending guides spaced apart, and pivotally connected to the beam and forming cable bearings.

5. An attachment for a walking beam formed with a transverse cable bearin and depending guides spaced apart, and a apted to be pivotally con to the beam and forming cable bearings, and means adapted to hold said guides in fixed position relative to the beam.

6. An attachment for a walking beam including a cable bearing adapted to be swung ing guide.

8. An attachment for a walking beam including a pair of cable guides ada ted to be ivote to said beam and space apart, a jointed brace for each guide, said braces being adapted to be connected to the beam'and to the respective guides.

9. In a well pumping apparatus a walking beam having arcuate side ides, one on each side, said guides forming earings for a connecting member, a brace connected to the walking beam and to each guide and normally holding said guides in working relation with the beam, said braces being releasable to permit the guides to swing into inactive osition.

10. n a pumping apparatus, a support, a walking beam having a pivot bearing on said support, and having arcuate side guides forming bearings, said guides forming arcs of circles which are concentric with the pivot bearing, braces connected to the respective guides and to the walking beam and normally holding said guides in working relation with said beam, said braces being releasable to permit the guides to swing inwardly toward the support into inactive position.

11. In combination a pivotally mounted walking beam, a pump rod, means connecting said pump rod to said beam, guiding means on opposite sides of said beam adapted to maintain said connecting means in vertical alignment with respect to the pump rod during the operation of the rod, braces normally maintainingsaid guiding means in fixed working position relative to the beam, said braces being releasable to permit said guiding means to swing into inactive posi' tion.

12. An attachment for a pivotall mounted walking beam, including a bearing for a flexible connecting member, said bearing having an extended lower end capable of movement, in substantially a vertical plane, relative to the walking beam, means for fixing said lower end against such movement, said means being releasable to permit such movement.

13. An attachment for walking beams including a pair of bearings ada ted to have a swinging movement with r tion to the beam, and to be arranged, one on each side of the beam, means provided toconnect said bearing to said beam to prevent such relative swinging movement, said means being releasable to permit such movement.

14. An attachment for walking beams ineluding a guide adapted to be pivotally connected to the side of said beam and to depend therefrom, said guide forming a bearing for a flexible connecting member.

15. An attachment for a walking beam, said beam being adapted to be mounted on a pivot bearing, said attachment including an arcuate guide which forms an arc of the circle concentric with said pivot bearing, said guide being pivotally connected to said beam and dependin therefrom and forming a bearing for a ber.

16. An attachment for a walking beam inflexible connecting memeluding a bearing for a flexible connecting member, said bearing being adapted to be supported by said beam, depending guides adapted to be associated with the beam, one on each side thereof, said guides forming bearings for said connecting member, and means adapted to connect the guides with the beam, said connecting means being formed to normally hold the guides in fixed relation to the beam and also to permit the movement of said guides relative to the beam.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

REX G. HAMAKER.

Witnesses J. A. WATTS, L. C. GUNDERSON. 

